[POWERPC] Add cpu feature for SPE handling

[deliverable/linux.git] / arch / powerpc / kernel / process.c

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index e477c9d0498bed92efd0ebad78db4db4187afd9f..57c589c34147fc4dc54b19f256f4fb0e963ea981 100644 (file)
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -669,9 +669,13 @@ int set_fpexc_mode(struct task_struct *tsk, unsigned int val)
         * mode (asyn, precise, disabled) for 'Classic' FP. */
        if (val & PR_FP_EXC_SW_ENABLE) {
 #ifdef CONFIG_SPE
-               tsk->thread.fpexc_mode = val &
-                       (PR_FP_EXC_SW_ENABLE | PR_FP_ALL_EXCEPT);
-               return 0;
+               if (cpu_has_feature(CPU_FTR_SPE)) {
+                       tsk->thread.fpexc_mode = val &
+                               (PR_FP_EXC_SW_ENABLE | PR_FP_ALL_EXCEPT);
+                       return 0;
+               } else {
+                       return -EINVAL;
+               }
 #else
                return -EINVAL;
 #endif
@@ -697,7 +701,10 @@ int get_fpexc_mode(struct task_struct *tsk, unsigned long adr)
 
        if (tsk->thread.fpexc_mode & PR_FP_EXC_SW_ENABLE)
 #ifdef CONFIG_SPE
-               val = tsk->thread.fpexc_mode;
+               if (cpu_has_feature(CPU_FTR_SPE))
+                       val = tsk->thread.fpexc_mode;
+               else
+                       return -EINVAL;
 #else
                return -EINVAL;
 #endif